Electronic book



FIG. 1 is a frontal view showing our design;

FIG. 2 is a back view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view. 

The ornamental design for an electronic book, as shown. 